Event-related potentials to auditory stimuli in female Vietnam nurse veterans with posttraumatic stress disorder.
Psychophysiology
; 39(1): 49-63, 2002 Jan.
Article
em En
| MEDLINE
| ID: mdl-12206295
ABSTRACT
Individuals with posttraumatic stress disorder (PTSD) have been found to show several event-related brain potential (ERP) abnormalities including reduced target P3b amplitude, P50 suppression, and P2 amplitude/intensity slope. Female Vietnam nurse veterans with (n = 29) and without (n = 38) current PTSD completed P50 paired-click, three-tone "oddball" and four-tone stimulus-intensity modulation procedures. Opposite to previous findings, the current PTSD group had larger target P3b amplitudes and increased P2 amplitude/intensity slopes. Reduced P50 suppression was associated with increased severity of general psychopathology, but not with PTSD diagnosis. Findings suggest that target P3b amplitude and P2 amplitude/intensity slope abnormalities reflect different pathophysiological processes. Future research is needed to determine whether the opposite ERP abnormalities observed in this PTSD sample reflect gender-, trauma-, or sample-specific findings.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transtornos de Estresse Pós-Traumáticos
/
Veteranos
/
Potenciais Evocados Auditivos
/
Enfermeiras e Enfermeiros
Limite:
Adult
/
Female
/
Humans
/
Middle aged
País/Região como assunto:
Asia
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article